Which one belongs to expendable molds?
举一反三
- Expendable molds,Which typically are made of sand
- Which one of the following belongs to
- Which one belongs to bound morpheme? A: anti-war B: legal
- 中国大学MOOC: Which one of the following foods belongs to yin（阴） food?
- Expendable molds , which typically are made of sand, plaster, ceramics, and similar materials and generally are mixed with various binders(bonding agents) for improved properties. These materials are refractories (that is, they are capable of with standing the high temperatures of molten metals). After the casting has solidified, the mold is broken up to remove the casting.